ati2vaa has stopped working properly?

Hey, I've been reading a lot of posts written by people having problems very similar to mine, so I'm hoping someone will read this and know how to fix it lol.
Every time I play a game that requires any kind of good graphics, the screen goes black and a error message comes up saying that the ati2dvaa has stopped working properly.
I bought my graphics card or whatever its called about 4 years ago, so it may just be that its out of date. I've run the update for my ATI driver and it still doesn't work.
I've tried uninstalling and reinstalling it, then updating it again after it screws up during gameplay, and it still doesn't work.
I can't roll it back to a different version, because our original was the one we had been using for years and its when we installed windows xp that it stopped working...
I even changed the game compatability for windows 98 settings.
Every time I think I have it fixed it will work for 10 minutes then screw up.
If you have any idea what I should do, please help me lol

That system is best suited for pre-2000 games, and anything newer will bring it to its knees. Too, xp runs very poorly with 128megs ram, 256 or more is far better. For the newer games, your system is beneath most all of their lowest reqs. You could add another 128meg stick of ram, and a better grafix card, like a gf4ti, and play stuff from 2002 or so, but a new system would take care of everything.